Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit e7c0fe2a authored by Andy Gross's avatar Andy Gross Committed by Vinod Koul
Browse files

dmaengine: add Qualcomm BAM dma driver 



Add the DMA engine driver for the QCOM Bus Access Manager (BAM) DMA controller
found in the MSM 8x74 platforms.

Each BAM DMA device is associated with a specific on-chip peripheral.  Each
channel provides a uni-directional data transfer engine that is capable of
transferring data between the peripheral and system memory (System mode), or
between two peripherals (BAM2BAM).

The initial release of this driver only supports slave transfers between
peripherals and system memory.

Signed-off-by: default avatarAndy Gross <agross@codeaurora.org>
Tested-by: default avatarStanimir Varbanov <svarbanov@mm-sol.com>
Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
parent cca946ea

drivers/dma/Kconfig

+9 −0
Original line number Diff line number Diff line
@@ -400,4 +400,13 @@ config DMATEST 
config DMA_ENGINE_RAID

	bool



config QCOM_BAM_DMA

	tristate "QCOM BAM DMA support"

	depends on ARCH_QCOM || (COMPILE_TEST && OF && ARM)

	select DMA_ENGINE

	select DMA_VIRTUAL_CHANNELS

	---help---

	  Enable support for the QCOM BAM DMA controller.  This controller

	  provides DMA capabilities for a variety of on-chip devices.



endif

drivers/dma/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -44,3 +44,5 @@ obj-$(CONFIG_DMA_JZ4740) += dma-jz4740.o 
obj-$(CONFIG_TI_CPPI41) += cppi41.o

obj-$(CONFIG_K3_DMA) += k3dma.o

obj-$(CONFIG_MOXART_DMA) += moxart-dma.o

obj-$(CONFIG_FSL_EDMA) += fsl-edma.o

obj-$(CONFIG_QCOM_BAM_DMA) += qcom_bam_dma.o

drivers/dma/qcom_bam_dma.c

0 → 100644
+1111 −0

File added.

Preview size limit exceeded, changes collapsed.